Discussion on Wikisource seemed to suggest that it would be useful if there were
a tag similar to <gallery> that allowed 4 or 5 images to be displayed in a
VERTICAL gallery, rather than horizontally - allowing the images to run down the
side of the page - particularly for documents such as a 5 page letter or
something, so the original Gettysburg Address or whatever is uniform and
"galleries", but running vertically along the text.